from django.shortcuts import render
from rest_framework.response import Response
from rest_framework.views import APIView
from libs.captcha.captcha import captcha
from django import http
from django_redis import get_redis_connection
from rest_framework.generics import GenericAPIView
from libs.yuntongxun.sms import CCP
import random
from rest_framework import status
from . import serializers

class ImageCodeView(APIView):
    def get(self, request, image_code_id):

        # 1.生成图片验证码
        text, image_date = captcha.generate_captcha()

        # 2.保存图片验证码的值
        redis_conn = get_redis_connection("code")
        redis_conn.setex("image_code_%s" % image_code_id, 300, text)

        # 3.返回
        response =  http.HttpResponse(image_date)
        response["Content-Type"] = "image/jpg"
        return response

class SmsCodeView(GenericAPIView):
    serializer_class = serializers.SmsCodeSerializer
    def get(self, request, mobile):
        # 1.获取参数
        dict_data = request.query_params

        # 2.创建序列化器, 校验
        serializer = self.get_serializer(data=dict_data)
        serializer.is_valid(raise_exception=True)

        # 2.1 判断是否频繁发送
        redis_conn = get_redis_connection("code")
        send_flag = redis_conn.get("send_flag_%s" % mobile)
        if send_flag:
            return Response({"errmsg": "频繁发送"}, status=status.HTTP_400_BAD_REQUEST)

        # 3.发送短信
        sms_code = "%06d" % random.randint(0, 999999)
        print("sms_code = %s" % sms_code)

        # 4.短信入库
        redis_conn = get_redis_connection("code")
        redis_conn.setex("sms_code_%s" % mobile, 300, sms_code)
        redis_conn.setex("send_flag_%s" % mobile, 60, True)

        # 5.返回响应
        return Response(status=status.HTTP_200_OK)
